I had the same problem with my 1955 C30. It was solved by installing a rebuild kit in the fuel pump. A previous mechanic had replaced the diaphragm with some improper material that did not flex very well and the check valve was also apparently leaking and allowing fuel to drain back to the tank. Poor pump performance then delayed pulling fuel into the emptied line until RPM was established by priming. Now the big brute starts on about half a crank. I think replacing or rebuilding the pump is a better bet than blowing air back down the line. I understand there is a filter or screen on the intake line inside the tank that might be plugged, but air pressure would probably blow it off and give you only a temporary fix. The point has been made that current fuels and most old fuel system synthetic components are incompatible and this can cause deterioration of the soft fuel pump components. Avoid NOS pumps in favor of recently rebuilt or recent rebuild kits to get modern materials not soluble in or embrittled by modern fuel. Enjoy your F this Spring. Keep us posted on how you resolve your lack of fuel problem. 300-ly, Rich Barber Brentwood, CA 1955 C-300 >Now that spring is (finally!) approaching, I am getting the 300F out of >winter storage. It won't start, and the problem seems to be fuel. Gas dumped >into the carbs will allow the engine to run for 5 or ten seconds, but then it >quits. I've pulled the fuel inlet tube from the fuel pump into the carbs, and >it's dry, and no gas comes out when the engine is cranked. I'm working my >way down to the fuel pump. If nothing spurts from the pump when the engine is >cranked, would anything be damaged if I were to use air pressure to blow out >the fuel line from the fuel pump input out to the fuel tank? Thanks in >advance for whatever help is out there. McTaggart > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Help save the life of a child. Support St. Jude Children's Research Hospital's 'Thanks & Giving.' http://us.click.yahoo.com/6iY7fA/5WnJAA/Y3ZIAA/8LmulB/TM --------------------------------------------------------------------~-> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/